Display device and its driving method

• Main Author: MATSUKAWA TOSHIKAZU
• Format: Patent
• Language: Chinese; English
• Published: 23.05.2012
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; EDUCATION; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

A display device and a driving method of the display device, with which a gamma characteristic can easily and speedily be corrected when a display part is renewed, are provided. When power of a liquid crystal display device is turned on, provisional gradation reference voltage generated by a voltage dividing circuit where a plurality of resistors are connected in series is given to a source driver. Thus, the source driver generates a provisional gradation voltage group based on given provisional gradation reference voltage. When a power supply circuit is started, gradation voltage data given from a display control circuit is D/A-converted by a D/A converter and regular gradation reference voltage is generated. When regular gradation reference voltage is generated, regular gradation reference voltage is given to the source driver instead of provisional gradation reference voltage. The source driver generates regular gradation voltage based on regular gradation reference voltage insteadof provisional gradation